Jess Cartner-Morley on fashion: mermaidcore calls for shimmer and shells – just don’t go overboard

What does a grownup mermaid look like? It starts with the silhouette … Before wild swimming was even a twinkle in the eye of the culture, and before ice plunging went viral on TikTok, there were mermaids. Mermaids are the original summer It girls. Who doesn’t want hair that looks great when it’s wet and salty, shell jewellery, killer sex appeal and a life of sun, sea and winding up sailors for…